It could also be the sound of a monster or a demon that is lurking in the shadows. This creature might use the 'po po po' sound to disorient its victims. Say, it lives in an abandoned place and when someone enters, it starts making the 'po po po' sound to create fear and confusion before it attacks.
Well, the slendytubbies themselves are quite popular. Their distorted and creepy versions of the original Teletubbies make them central figures. Laa - Laa in her slendytubbies form might be popular as she has a certain allure in her new, more menacing look.
One interesting concept could be alternate universes where the slendytubbies have different powers or characteristics. For example, they might be able to communicate with humans in a friendly way instead of being menacing.
The 'Slendytubbies' involves a dark and disturbing take on the Teletubbies. It's about these once - cute characters being in a very spooky and often violent setting. There are elements of horror like strange disappearances and the appearance of a Slenderman - like figure.
A monster might be in a 'po po po scary story'. For example, a monster that has a strange way of communicating, like making the 'po po po' sound. It could lurk in the shadows and when it's close, it makes that noise to terrify its prey.
Once upon a time, in a small, old house, there was a strange noise that went 'po po po' every night. It was a doll. Its eyes glowed red in the dark and it moved on its own. Every time it made the 'po po po' sound, something bad would happen. One night, a girl woke up and saw the doll right next to her bed, making that terrifying 'po po po' sound.
In a small village, there was a well that made a 'po po po' sound. The villagers were afraid to go near it. One curious boy ignored the warnings. He peered into the well and heard the 'po po po' louder. Then, he saw a hand reaching out from the well. He tried to run but his feet were stuck. The 'po po po' was like the call of an evil entity from the depths of the well. Just as the hand was about to grab him, his friends pulled him away.
Well, 'slendytubbies a new story' might bring in fresh horror elements. It could be that the new story focuses on the origin of how the tubbies became so menacing. For example, perhaps there was some sort of dark magic or a scientific experiment gone wrong that led to their transformation. And it might also introduce new challenges for the characters who have to face these distorted tubby beings.